. >> the nra's blanket call to arm our schools is really nothing more than a distraction. >> reporter: as the debate in washington rages on, so do the classes on how to arm teachers in utah. >> we just want to make sure that people have the tools at their disposal to mitigate risk and save lives at the end of the day. >> reporter: this training was so popular, there's already another one planned for the next school break. for "good morning america," cecilia vega, abc news, los angeles. >>> switching gears, now, to how to lighten up the gloomy winter months? not just for us, but for your pets. apparently, it's all rooted in science. it turns out, your dog or your cat may be depressed. and the treatment that works for humans could also work for your pets. it's true. abc's dan harris has the story. >> reporter: of all the absurd things we do for our pets, the massages, the themed birthday parties, the treadmills, the high-end couture. the paris hilton $325,000 doghouse. >> inside is moldings and lighting and heat and air conditioning. >> reporter: of all of the over-the-top pampering, th